| 摘要 |
The invention relates to a laser machining head (1) having a focusing optical unit (2) for focusing a laser beam (3) in the direction of a machining zone (4) of a workpiece (5) and having a cross-jet nozzle (6) for producing a cross flow (7), which passes through the focused laser beam (3) transversely, in particular at a right angle, to the beam axis (8) of the focused laser beam (3). According to the invention, the distance (D) of the cross-jet nozzle (6) from the workpiece (5) is less than 20 mm, in particular between 8 mm and 12 mm. Preferably, a nozzle body (10) having a bottom opening (11) open toward the workpiece (5) is provided laterally adjacent to the focused laser beam (3), from which bottom opening a protective gas (12) flows out, wherein the bottom opening (11) is arranged below the cross-jet nozzle (6) in order to entrain the protective gas (12) located between the nozzle body (10) and the workpiece (5) by means of the cross flow (7) of the cross-jet nozzle (6) in a transverse direction (13) at least so far that the protective gas flows over the machining zone (4). |
